Ignition device.



F. A. GLASGOW. IGNITION DEVICE. APPLICATION I'ILBD FEB.17, 1910. v 989,905n I Patented Apr. 18, 1911, 4

' esaeoe.

device FRANK A GLASGOW, ST. LOUIS, MISSOURI.

`To all whom 'it may concern.' i

Be it known that I, FRANK St. Louis, Missouri, have invented a certain `new and useful Improvement in Ignition Devices, of'whichthe following-is a full', clear, and exact description, such as will enable others-skilled inthe art to which it appertaiiis to make and use the same. rllhis invention relates to ignition devices such as are used'on internal combustion engines.

One object of the invention is to provide an ignition device of simple construction which is so designed that the igniter can be j removed without stoppingthe engine.

Another object is to provide an ignition used as anauxiliary device and which is so designed that the igniter will not become covered with carbon or oil when the .device Ais not in use.

, are formed; and Fig. 3

Another object is to provide an ignitionV device of thecli'aracr above described that comprises .only a few parts and which can be manufactured at a low cost and applied easily to` an engine. And still. another object is to provide an ignition mechanism that. comprises a plurality of ignition devices and means for'simultaneously adjusting said devices to` causel them to become operative or inoperative. '1, p Figure l of the drawings is a vertical sectional vievv of an ignition device constructed in accordance with my invention;v Fig. 2

is a horizontal sectional view of that portion of the member A in which the o enings 7 A p is a vertice. sectional view of a modified form .of my invention.

My improved ignition device comprises a tubular-shaped adjustable holder in which the -igniterl is arranged, and a coperatiiig` stationary member that forms a closure for the inner end of said holder. The stationary n iember is provided with openings that permit the gas in the cylinder of the engine to enter'the holder and thus be ignited by the igniter, andv the igniter-holder is adapted vto be moved relatively to said stationary member so'as to close the. ports or openings through which the gas enters the holder and thus permit the igniter to be removed without stopping the engine.

Referring to Fig. 1 of the drawings,` 1

designates the wall of an engine cylinder,jA designates a tubular-shaped member mount- Specication of Letters Patent.

j A. GLASGOW, a citizen of the United States,-vresiding at of improved construction thatcan be' the end wall 2 of the Patented am. is, ieri.

Application flied February 1l?, 1910, Serial No. 544,335.

ed in said wall and provided with an end wall 2 that is located inside of the cylinder, and B designates an igniter-holder that is adjustably mounted in the stationary member A. A jump spark plug 3 or some other suitable igniter is clamped in the holder B by means of anut et, and the end Wall 2 of the stationary member A. is provided with a contact 5 that coperates with the contact G on the spark plug to form a. spark When said contacts are spaced apart, as shown in Fig. 1, and electric current is iiowing through the conductor to which the contact 6 is connected.

A. plurality of openings 7 are formed in the side wall of the member A adjacent the inner end 'wall of said member so that the gas in the cylinder ofthe engine can enter the chamber in which the spark plug is arranged and thus be ignited by the spark that forms between `the contacts, and the igniter-holder B is so constructed that it can be moved inwardly so as to close the openings 7 through which the gas enters the spark plug chamber, and4 thus permit the spark plug to be removed While the engine continues in operation.

In the construction shown in Fig. l the holder B is provided with external screwthreads that-coperate with internal screwthreads on the interior of the member A, but it will, of course, be obvious that the holder and the member which carries saine could be connected together in various other ways. The upper end of the holder can' be knurled or provided with a noncircular head so as to enable it to be Vadjusted easily, and the member A is also. providedl with a non-circular head or kiiurled portion to facilitate screwing said member iiito the wall of the cylinder. When the igniter-liolder is adjusted liii the position shown in Fig. lthe gas in the cylinder can flow freely into the spark plug chamber but when the holder is adjusted inwardly so that the inner end of saine abuts against member A the ports or openings 7 will be tightly closed. The spark plug can then be removed and cleaned or a new plug arranged in the holder without stopping the engine for when the end of the holder engages the-.end wall of the member A the spark plug chamber will be positively cut oi from the cylinder of the engine. v

Another advantage of such a construction is that When it is used as an auxiliary ignition device, the igniter Will not become covered With carbon or oil When the orts or side Walls adjacent said en ters Patent is: 1. An Aignition device for internal combusare closed, the chamber 4in which the igniter is arranged is completely cut off from the cylinder of the engine. l

An ignition device .of the construction above described can 4be manufactured ata low cost in View of the fact that itv is-not .provided AWith valves or valve seats which to its commercial value because it can be 1nstalled easily and it is not apt to get out of order.

While I prefer to use a member A that is separate anddistinct from the Wall ofthe cylinder for closing the inner end of the igniter-carrier, it Will, of course, be obvious that the Wall of the cylinder couldbe providedwithan integral plate ormember 2a: for closing the inner end of the igniter carrier B', as shownin Fig. 3, said plate being supported by a plurality of lugs 9 which are spaced away from each other so as to form slots or openings 7 through which the gas can pass into the chamber in Which the igniter is arranged.`

Having thus described my invention, what' I claim as new and desire to secure by Let.

tion engines, comprising an approximately tubular-shaped member arranged inthe Wall of an engine cylinder and providedwith an end Wallthat lies inside of said cylinder, said member having openin s formed in its Wall, a longitudinally adjustable ignitereholder mounted in said membenand provided with external screw-threads that mesh with threads on vthe inner face of said member, said holder being adapted to be moved longitudinally. of said member so as to open or close the openings m the side Walls thereof, and anJigniter arranged m said holder.

2. In'an ignition devlce for internal combustion engines, a hollow member mounted.

a longitudinally adjustable spark plug holdermounted in said member and provided with external screw-threads that mesh with internal screw-threads on Said member, thereby enabling said holder to be moved into a )osition toA close the opening in said mcmer, said holder being open at both ends and I its inner end being so shaped that a tight joint Will be produced when it bears against the inside face of the end wall of the member in which the holder is mounted, and a yremovable spark plug moiinted in said holder.

.8. An ignition device for internal combus-p tion engines, comprising an approximately tubular-shaped member statlonarlly mounted 1n the Wall of an engine cyllnder and rovided with an end'wall thatis arrange 11 1- side of the cylinder, the vside walls of said member having openings formed therein, a tubular Shaped lgniter --holder adj ustably mounted in said member and adapted to be moved into -such a position that it closes the openings lin l.the side Walls of said member, a

spark lplug mounted in said holder, and a contact on the end Wall' of said member that coperates Witlrthe contact of said spark. plug. v In .testimony whereof I hereunto aflix my signature in the presence offtwo witnesses, this fourteenth day of February 1910.

FRANKIQL (,irLAShrtNV,`

`Witnesses:

lVELLs L. CHURCH, GEORGE BAKEWELL.

y Copies `of this patentmay be obtained for`ve cents each, by addressing -tlie l Commissioner of' Patents,

A Washington, D. C. 

